That's a very interesting exercise for imagination. I think my base wardrobe would be:
- a pair of very basic flare jeans - dark muted blue and dark-almost-black-grey (really basic, almost social style, no details or embellishments)
- low rise extra flare jeans "washed out" dark blue, more casual
- black straight above-knee skirt
- black suit pants (with bootcut trouser and two button blazer)
- a versatile dark blue or green knee length A-line skirt (versatile meaning something I can use on a work meeting, happy hour or to go out for a dinner)
- denim shorts rolled up
- olive rain parka
- 3/4 black coat
- dark denim jacket with a "blazer like" cut
- one extra blazer or coat in a vivid carmine red or dark wine or aubergine
- a pearl white, round neck, buttoned cardigan
- a casual knee length w/ marked waist summer dress in a colorful pattern
- a business/classic cap sleeve knee length dress (any muted dark blue)
- multi-way knee length black A-line dress
- classic white shirt
- v-neck sleeveless fitting black top
- a long shirt in fluid fabric (mini dress length)
plus a set of tops with different neck-lines/colors/fits/details distribute in: 2-3 long sleeve "doesn't need iron" shirts, 2-3 long sleeve basic tees, 2-3 strap/tank tops; 2-3 sleeveless blouses; 2-3 cap or short sleeve tees;
plus a set of accessories w/ a black 2 finger wide belt; 2 pashminas in solid colors, a patterned one and a white wool scarf, 2-3 silver earings, long silver chain w/ single rustic stone pendant, short silver chain w/ delicate pendant, a set of boho bracelets mixing silver leather, black, blue and green; , a statement bracelet; marcasite bracelet, earings and pendant; 1 cross shoulder casual purse, 1 classy black clutcher and a medium size shoulder black handbag.
shoes: low wedge or low-heel strappy sandals; mid-heel black sandals with ankle strap; melissa flats; black ballerinas; mid-heel black court shoes; high-heel black pumps; black mid-heel closed ankle-boots
(plus good underwear and some louge/gym pieces)